Road-grading machine



Sept. 28x, 1926. 1,601,510

J. B. RHQDES ROAD GRADING MACHINE Y Filed Jn. 16 1920 4 Sheets-Sheet l wy* l mi n Sept. 28 1926.

J. B.' RHODES ROAD GRADING MACHINE 1920 4 Sheets-Sheet 2 filed Jan: 16

sept. 2s 1926.

J. B. RHQD'Es ROAD GRADINGMACHINE Filed Jan. 1e

1920 4 Sheets-Sheet 5 Sept. 28 1926.

J. B. RHODES ROAD GRADING MACHINE Filed Jan. 1e

1920 4 Sheets-Sheet 4 Patented Sept. 28, 1926. Y

UNITED OFFICE.

JAY s. RHODES, or 'KAIIILMA'ZOQMMICIIIGAN AssGNOR iro WESTERN tv'n'nELERsCRArER COMPANY, or AURORA, ILLINOIS, A CORPORATION or ILLINOIS.

ROAD-GRADING MACHINE Appiic'aton filed Janilary 16, 1920. serialNo.351,974.

My invention relates to road making ma chinery, and has for its objectto 'provide a new and improved grading machinel especially adapted foruse as a/trailer to be drawn by a traction engine. Iln operating suchmachines they are usually hitched Ato the traction engine by a longcable, which sometimes is as much as sixty feet long, to per mit thetraction engi-ne to run oil o'r at one lo side of the crown of the roadWhile the grading machine travels in the ditch at the opposite side ofthe crovvn from thatA Where the traction en 'ine is "traveling, Undersuch conditions t ere is a stronglateral pull on the grading machineWhich makes it very difficult for vthe operator to" hold vit properly toits Work, and this isV intensified by the rough going which usuallyobtains in a Wa side ditch. Fi'irthermore, it is frequently 2e necessaryin operating a grading machine to project the scraper laterally awayfromf-tlie road bed to cut down'a bank-,- and this further increases thedifficulty of steering under the conditions above mentioned, so thatfre"- quently the Work of steering under such conditions with gradingmachines as heretofore constructed is practically beyond humanvendurance.

Again, in the Work of steering a trailing lgrader on the roadway asdistinguished from in the ditch,- inequalitife's in the' surface Of theroad, or curves of the road,'deflect the line of draft to one side'Orthe other,l and this is 'particularly tr'ue in turning corners, sothat Eef there is a constant tendency tos'vving the front Wheels to oneside or the other, which, in machines as heretoforeconstr`ucted-,l1nales steering difficult and burdensome. Theimprovements which form the subject-matter of my present inventionprovide means by which the difficulties above' mentioned areA to largeextent, if not completely, overcome, and the grading machine may be'steered comparatively easily even under ythe most if exactingconditions. rlC-'h'e nature of such* inrproveinents is specificallypointed out inthe following` vdescription of the constructionillustrated in the accompanying drawings, which illustrate thepreferredembodiment tu of my invention. VVhztt I-'regalrd `asnvv 'is set forth inthe claims.

In the accompanying" drawings-, y Y. Fig. 1 is? substantially aside'elevati'on of the front portion-.of a read' grading machine@ Fig. 5is a vhorizontal section o'n line 5 5 In the drawings I have illustratedonly such parts of a road grading machine as are necessary to. a fullunderstanding of my inventio'n, and it shouldbeIv understood that thedrawings are intended to illustrate the application of my improvementsto a grading machine Of a standard type,- comprising a Wheeled frameunder which is disposed the usual angularly and vertically adjustablescraper blade, the various adjustmentsl of which are effected `by theusual operating de# vices mounted on the grader frame. The machine mayalso be provided with an end- Wise and angularly adjustable rear axle.These features arev all old a'nd Well-'knownV to those familiar ywiththe art so' that it is not believed to be necessary lto illustrate ordescribe them atl this time.

Referring nowv toAA the draWings,'-6 indicates the main' frame of? thegrader, 7 the' scraper supporting frame,- and 8 the scraper blade, whichis connected to thev frame 7 by a bifurcated curved beam 9v and theusual ro# tary connecting devices so that the scraper bladeV may beangula'rly' and otherwise adjusted in the usual Way. The frame 7 has theusual goose-neck 10 at its forward end by which it is connected to thedraft devices, as rvill be hereinafter described.

11', 12 indicate the front Wheels, which are mounted, respectively, vonspindles 13, 14 carried by vertical' sleeves 15, 16 Which fit in thebifurcated en'd portions 17, 18 of a dirigibl'e front axle 19, as bestshown in F iig, and are pivotally supported by vertical pivots 20, 21,-as best shown in Fig. 4; Thus the yfront Wheels may be turned angularlyivith reference to the axle 19' for steering the machine, theconstruction in this respect beingsi'milar t'o that used in connection'tvith automobile yvehicles ff various kin'd's, except that the' aile19""a'lso`l is pivoted to svvingV horizbnt'ally. The sle` 'es4` 15, 16are provide with steering arms'- 2 2, 23 rigid there with and projectingforward therefrom, preferably at a right angle, as shown in Fig. 4. The'steering arms 22, 23 are not connected directly together by a rigidcrossconnection, as is the case in automobile construction, but they areadjustably connected by links 24, and pins 26, 27 with a segmental rack23, as shown in Fig. 4, said rack being provided with two arcuate seriesof holes 29, 30, extending` generally fore and aft, to receive the pins26, 27. The segmental rack 28, therefore, forms an adjustableintermediate connection between the inner ends of the links 24, 25 andnot only provides for adjusting` the out of the wheels so that thegrader will trail with the tractor when using cables of differentlengths, but also for swinging the arms 22, 23 simultaneously in onedirection or the. other to guide vthe machine in the manner hereinafterdescribed. rihe 'forward'portion or apex of the segmental racli 23 ismounted on a vertical pivot 31 fitted centrally in a cross-bar 32 whichforms part .of a rigid steering frame connected with the front axle 19.This frame comprises two parallel side bars 33, 34, the rear endportions of which are secured to the upper side of the axle 19, as shownin Fig. 2, while their forward end portions are secured to the cross-bar32; also a longitudinally-extending bar 35, the forward end portion ofwhich is secured by the. pivot 31, as shown in Fig. 3. This bar 35extends under the axle 19, to which it is secured, and then extendsrearward and upward where it is connected to the rear end portion of alongitudinally-extending beam 36 mounted centrally upon and secured tothe axle 19, as shown in Figs. 2 and 3. The beam 36 is provided atitsends with upturned lugs 37, 33 for the pivotal connection therewithof the lower member 39 of a fifth wheel or draft frame, this connectionbeing accomplished by providing the frame 39 with downwardly extendingbifurcated lugs 40, 41 which fit upon the lugs 37, 33 to which they areconnected by pivots 42, 43, as shown in Fig. 3. Thus the frame 39 iscapable of rocking laterally upon the beam 36. The forward portion ofthe frame 39 is provided with a draft ring or eye 44 adapted to receivea hook 45 at the rear end of a draft rod 46, as shown in Fig. 3. Thisdraft rod, which is comparatively long, has an eye 4? at its forward endfor 'the connection therewith of a draft cable 48, which may be of anydesired length, and serves to connect the draft rod 46 with any sourceof pow r, such as a traction engine.

rl`he forward portion of the steering frame heretofore des ribed is'provided with a tongue 49, as shownin Fig. 3, the rear end of saidtongue being connected with the cross-bar 32 by means of a lug 50carried centrally by saidcross-bar and connected with said 'tongue by apivot 51. The forward portion of the tongue 49 is connected loosely withthe draft rod 46 by a hook 52V which is connected with the tongue by ahorizontal pivot 53 and hooks over the steering rod 46, as shown in Fig.3. By this construction, when the draft rod 46 is swung laterally ineither direction by deflection of the line ofl draft the tongue 49 willbe swung in the same direction, thereby correspond- -ingly turning thefront axle. The edect of this adjustment upon the `front wheels will beexplained later on.

The forward portion of the grader frame 6 is supported upon the draftframe 39 by means of aring plat-e 54 which forms the upf per member ofthe fifth wheel and is fitted to turn upon the upper marginal portion ofthe draft frame 39, as shown inFig. 3. ring plate 54 is held in positionby a series of clips 55 secured to t-he upper surface of the draft frame39, and overlapping the inner marginal portion of the ring plate 54, asshown in Figs. 3 and 5. cate standards connecting the forward portion ofthe grader frame 6 with the ring plate 54. 59 indicates a tubularbearing which rises centrally from the draft frame 39 and serves toconnect the forward portion of the goose-neck 10 with said draft frame,this connection being effected by means of a connecting bar 60 which ispivoted upon the bearing 59 and extends rearwardly over the draft frame39 to the forward end of the goose-neck 10 to which it is connected by ahorizontal pivot 61, as shown in Fig. 3. Thus the draftframe 39 mayswing about a vertical axis independently of the scraper' frame 7, andthe latter frame may swing vertically about the pivot 61 independentlyof t-he draft frame 39. The bearing 59 is braced by a brace 62 whichlits over its upper end portion and is fixedly connected with theforward portion of the draft frame 39 in any vsuitable way, as by rivets63, shown in Fig. 5. The steering mechanism comprises a vertical shaft64, the lower end portion of which is fitted in the bearing 59 while itsupper end portion extends through a cross-bar 65 secured to the forwardend portions of the members 66, 67 of the grader frame 6, as shown in Fig. 2, and extends into a housing 68 mounted on said cross-bar 65. Atits upper end the shaft 64 carries a worin wheel 69 which meshes with aworm 70 carried by a longitudinally extending shaft 71 which is coupledby a universal joint 72 to a steering rod 73 which runs back to thedrivers seat where it is provided with the usual steering wheel. Theworm steering gear is of the irreversible type so that the shaft 64 canbe rot-ated only by operation of the steering wheel. At its lower endthe shaft 64 is'connected by a universal joint The f tate independentlythereof, and inwthe `same plane with the segmental raek28 the shaft 75carries a pinionl 76 which is keyed tol said shaft so that it rotatestherewith. This pinion is mounted. in a recess 77 provided centrally inthel axle 19 so that it is intersected by the shaft 75, asbest shown in=Figs. 2 and 3. It is apparent that by rotat-v ing the shaft 64 the shaft75 and pinion: 76 will be similarly rotated. Thetoothed portion 7S ofthe segmental rack 28 meshes.v

with the pinion 76, as shownin Figs. 3 and1 4, and consequently therotation of the shaft 75 operates to adjust the segmental rack 28laterally with relation to the alxle 19, and thereby, through? the,lsteering links 24,-. 25 and arms 22,123, operates to adjnst the angularpositionY of the frontrwlieels.

The operation of my improved machine is as follows: lVhenv the draftisstraight away the front wheels `may be steered in the ordinary' way byturningtlre hand steering wheel in the appropriate direction, therebyrotating the pinion 76 and swinging the rear end of the segmental rack`A28 accordingly, which as has been explained, `correspondingly swingsthe steering arms 22, 23 and turns the front wheels toward one side orthe other. If, however, the hand steering wheel is not rotated,the-'pinion 76 will be locked against rotation because of theirlreversible character of vthe wornr gearingcon nected with the Ashaft64, and, therefore, if the 'forward porti-'en ot :the segmental rack 28is not swung laterally by the deflection of die line of draft the frontwheels will maintain their position.; If, however, the ifi-ne of draftbe deflected', as to the right, the steering frame will be swung in aclockwisedirection as` viewed in Fig. l, thereby correspondingly turningthe front axle v1f9 towardy the position Vindicated by dottedk l'ines insaid ligure. Bearing in mind that this turning of thel front `axle doesVnot rotate theA pinion 76, which remains stationary nr'rl'ess the handsteering wheel `is turned, it will be apparent that the rack teeth 78will ride over the teeth of the pinion 76, and, therefore, the rear endvportion of the segmental racli- 28 will lbev moved to 'the leftrelatively to the axle 19, las viewed in Fig. l, rllie result of thisoperation will be to swing the steering arms- 22, .23 in aconnterclocli'wise direction ais viewed insa'id figure, thereby turningthe lfront i'vh'eels so that they tend to run toward. the left.4 or inopposition to ythe deliectmg' tendency of theI altered line of draft. Inother. words, if the new Aline of draft turns the frontaar-le towardjthevrright, the front wheels will be turned to? ifi-:in to the' left of; adi.

ction. perpendicirlar to' the' axle, and, therefore, tend to direct `themachine more nearly straight ahead. Consequently in turning a corner,for example, the machine would automatically -turn in a comparativelylarge' arc.A This automatic action can,

of course, be supplemented or modified by operation of the hand steeringwheel?, so that the -niachine is capable of negotiating curves orcorners without difficulty. The advantage' of my improved constructionin operating in ditches where' the traction engine runs on or beyond'the crown 4of the road will also be readily` appreciated, since thelateral deflection of the line `of draft away from the ditchautomatically turns the steering' wheels in the opposite direction, ortoward the bank', so that the machine can easily be held in operativeposition, and the operator is enabled to force the vscraper bladeagainst the bank and hold it therewithout diiiicu'lty. The extent towhich the wheels are automatically deflected may be varied, softhat thegrader will traill with the tractor when using cables of differentlengths, by adjusting the position of Athe links 24, withl relation tothe lsegmental rack 28' by shifting the pins 26, 27 into one or anotherof the series' of holes 29, 30.y

So far as I am aware, the steering. mechanism shown and described isgenerically new. as I know of no prior machine having means forautomatically controlling the steering wheels in the vmanner described,andthe claimshereinafter madeA are, therefore, to be construedaccordingly.

lVhat I claim as my invention and desire to secufre by Letters Patent,is-

1. A grading mach-ine comprising a; main frame, a= dirigible front axle,wheels pivotally connected with said axle to swing laterally, draftdevices, and means' controlled thereby for turning said wheels laterallywith. respect to the axle and in the opposite direction to that in whichthe axle is turned.

A grading machine comprising a main frame,- a pivoted front axle,lwheels pivotally connected with said axle to swing laterally, draftdevices, and means automatically operating when the line of draft islaterally deflected for relatively turning said wheels in the oppositedirection.

3. A grading machine comprising a main frame, a pivoted front axle,wheels pivotally connected with said axle to swing laterally.vv draftdevices, and: means automatically operating when the line of draft islaterally deflected for turning said axle in the same direction andrelatively turning said wheels v in. the opposite direction.

' 4; vA gradingmachine comprisingA a main trame, dfirigirble frontwheels, draft devices, ineansautoinatically operating when' the line' ofdraft is laterally deflected for relatively turning said dirigiblewheels in the opposite direction, and meansfor independentlysteeringisa-id. wheels. e

5. A grading machine comprising a 'main frame, a pivot-ed front axle,Wheels pivotally connected with said axle to swing laterally, draftdevices, means automatically operating when the line of draft islaterally deflected for relatively turning said Wheels in the oppositedirection, and means for independently steering said Wheels.

6. A grading machine comprising a main frame, a pivotcd front axle,wheels pivotally connected with said axle to swing laterally, draftdevices, means automatically operating` when the line of draft islaterally deflected for turning said axle in the same direction andrelatively turning said wheels in the opposite direction, and means forindependently steering said wheels.

7. A grading machine comprising a main frame, a dirgible front axle,wheels pivotally connected with said axle to swing laterally, draftdevices, means actuated by lateral deflection of the line of draft forturning said axle laterally, and mechanism connected with said steeringwheels and operated automatically by the turning of said axle forswinging said wheels laterally with reference to the axle and in theopposite direction to that in which the axle is turned.

8. A grading machine comprising a main frame, a dirigible front axle,wheels pivotally connected with said axle to swing laterally, draftdevices connected with said main frame, a steering frame connected withsaid axle and with said draft devices so that lateral deflection of theline of draft deflects said steering frame, and means automaticallyoperated by the turning of the axle for swinging said wheels laterallyin the opposite direction.

9. A grading machine comprising a main frame, a dirigible front axle,wheels pivotally connected with said axle to swing laterally, draftdevices connected with said main frame, a steering frame connected withsaid axle and with said draft devices so that lateral deflection of theline of draft deflects said steering frame, means automatically operatedby the turning of the axle for swinging said wheels laterally in theopposite direction, and means for independently steering said wheels.

l0. A grading machine comprising a main frame, a dirigible front axle,wheels pivotally connected with said axle to swing laterally, draftdevices, steering means connected with said axle and operated by lateraldeflection of the line of draft, a transversely movable rack carried bysaid steering means and connected with said wheels, a pinion meshingwith said rack, and means independent of the axle for holding saidpinion against rotation.

ll. A grading machine comprising a main frame, a dirigihle front axle,wheels pivotally connected with said axle to swing laterally, draftdevices, steering means connected with said axle and operated by lateraldelflection of the line of draft, a transversely movable rack carried bysaid steering means and connected with said wheels, a pinion meshingwith said rack, and manually operated steering mechanism connected withsaid pinion, said steering mechanism comprising means for holding saidpinion against rotation when the axle is turned about its axis.

l2. A grading machine comprising a main frame, a dirigible front axle,wheels pivota-lly connected with said axle to swing lateraly, draftdevices, steering means Connected with said axle and operated by lateraldeflection of the line of draft, a transversely movable raclr carried by.said steering means and connected with said wheels, a pinion meshingwith said rack, and manually operated steering mechanism co-nnected with.said pinion, said steering mechanism comprising irreversible wormgearing for normally holding said pinion against rotation when the axleis turned about its axis.

18. A grading machine comprising a main frame, a dirigible front axle,wheels pivotally connected with said axle to swing laterally, draftdevices connected with said main frame, a steering frame connected withsaid axle and adapted to be guided by the draft devices, a laterallyswinging segmental rack mounted on said steering frame, a pinion havingits axis in alinement with the axis of said axle and meshing with saidsegmental racl, means connecting said segmental raclr with said wheels,and means for holding said pinion against rotation when the axle isswung on its pivot..

let, A grading machine comprising a main frame, a dirigible front axle,wheels pivotally connected with said axle to swing laterally, draftdevices connected with said main frame, a steering frame connected withsaid axle and adapted to be guided by the draft devices, a laterallyswinging segmental rack mounted on said steering frame, a pinion havingits .axis in' .alinement with the axis of said axle and meshing withsaid segmental racl, means connecting said segmental rack with saidwheels, and manually\ operated means for rotating said pinionindependently of the axle.

l5. A grading machine comprising a main frame, a dirigible front axle,wheels pivotally connected with said axle to swing laterally, draftdevices connected with said main frame, a steering frame connected withsaid axle and adapted to be guided by the draft devices, a laterallyswinging segmental rack mounted on said steering frame, a pinion havingits axis in alinement with the axis of said axle and meshing with saidsegmental rack, means connecting said segmental rack with said Wheels,and manllt) ually operated means for rotating said pinion independentlyof the axle, said manually operated steering means comprising.irreversible worm gearing.

ifi. A grading machine comprising a main frame, a pivoted front axle,wheels pivotally connected with said axleto swingk laterally, draftdevices connected with lsaid main frame, a steering frame connected withsaid axle and adapted to beguided by the draft devices, a laterallyswinging segmental rack mounted on said steering frame, a pinion havingits axis in alinement with the axis of said axle and meshingwith'saidsegmental rack, and means adjustably connecting said segmental rack withsaid wheels.

17. A grading machine comprising a main frame, a pivoted front axle,wheels pivotally connected with said axle toI swing laterally, draftdevices connected with Vsaid vmain frame, a steering frame connectedwith said axle and adapted to bey guided by the draft devices, alaterally swinging segmental rack mounted on said steering frame, apinion having its axis in .alinement with the axis of said axle andmeshing with said segmental rack, manually operated'means for rotatingsaid pinion independently of t-lie axle, and adjustable means connectingsaid segmental rack with said wheels, whereby the extent to which saidwheels are turned by deflection of the line of draft may be varied.

18. A grading machine comprising a. main frame, a fifth wheel supportingthe forward portion of said main frame, a dirigible axle supporting saidfifth wheel, a steering shaft in alinement with the axis of said fifthwheel, wheels dirigibly mounted on said axle, and means operativelyconnected with said shaft for turning .said wheels laterally withrelation to the axle either by the draft of the team or by rotation ofsaid shaft.

19. A grading machine comprising a main frame, a. fifth wheel supportingthe forward portion of said main frame, a dirigible axle supporting saidfifth wheel, a steering shaft in alinement with the axisv of said fifthwheel, wheels dirigibly mounted on said axle, a pinion connected withsaid steering shaft, a pivotally mounted rack meshing with said pinion,and means connecting ysaid rack with said steering wheels whereby saidwheels may be steered by the rotation of said steering shaft.

20. A grading machine comprising a main frame, a fifth wheel supportingthe forwardA portion of said main frame, a dirigible axle supportingsaid fifth wheel, a steering shaft in alinement with-the axis of saidfifth wheel, wheels dirigibly mounted on Vsaid axle, a pinion connectedwith said steering shaft, a segmental rack meshing with said pinion,means connecting said segmental rack with from, atongue connected withsaid steering frame, a draft frame mounted on said axle, a draft rodconnectedwithsaid draft frame and having a guiding engagement withv saidtongue, and Vmeans operated by. lateral movement of said steering framefon swinging said wheels laterally on the axle.k

. 22V. A grading machine comprising a mainl frame, a dirigible frontaxle, a fifth wheel mounted upon said axle. and supporting L'said mainframe, said fifth .wheeltbeing adapted toiocl; about al longitudinalaxis, dirigible wheels carried by said axle, a pinion carried by theaxle, means connecting said pinion withV said dirigible wheels wherebysaid wheels may be steered by the rotation of said pinion, and manuallyoperated steering mechanism mounted on said main frame and connectedwith said pinion.

23. A grading machine comprising a main frame, Aa front axle, dirigiblewheels carried by said axle, steering mechanism mounted on said mainframe and operatively connected with said dirigible wheels, a draftframe comprising a fifth wheel member, said fifth wheel member beingadapted to turn on ahorizontal axis with respect to the axle, and abouta vertical axis with respect to said niain frame, and Vmeans forconnecting said draft frame with the axle.

24;. A grading machine comprising a main frame, a front axe, dirigiblewheels carried by saidaxle, steering mechanism mounted on said mainframe and operatively connected with said dirigible wheels, a draftframe comprising a fifth wheel member, said fifth wheel member beingadapted to turn on a horizontal axis with respect to the axle, and abouta vertical axis with respect to said main frame, means for connectingsaid draft frame'with the axle, and a scraper frame pivot-ally connectedwith said draft frame.

25. A vgrading machine comprising a main frame, a dirigible front axle,dirigible wheels carried by saidv axle, steering mechanism mounted onsaid main frame and operatively connected with said dirigible wheels, adraft frame comprising a fifth wheel member, said fifth wheel memberbeing adapted to turn on aV horizontal axis with respect to the axle,

' and aboutk aA vertical axis with respect to said main frame, and meansfor connecting said draft frame with the axle.

26. A grading machine comprising a main frame, a dirigible front axle,dirigible wheels carried by said axle, steering mechanism mounted onsaid main frame and operatively connected with said dirigilole Wheels, adraft frame comprising a fifth Wheel member, said fifth wheel memberbeing adapted to turn on a horizontal axis With respect to the axle, andabout a vertical axis With respect to said main frame, means forconnecting said draft frame with the axle, and a scraper frame pivotallyconnected with said draft frame.

27. A grading machine comprising a main frame7 a dirigible front axle,Wheels pivotally connected with said axle to swing laterally, and draftcontrolled means operatively connected with said axle and operable toswing the axle laterally and to turn said Wheels laterally With respectto the axle and in the opposite direction to that in which the axle isswung.

28. A grading machine comprising a main frame, a dirigible front axle,Wheels pivotally connected with said axle t0 swing` laterally, draftcontrolled means connected with said Wheels and actuated by lateraldellection of the draft devices 'to turn said Wheels laterally'withrespect to the axle and in the opposite direction to that in which theaxle is turned.

29. A grading machine comprising a main frame, a dirigible front axle,Wheels pivotally connected with said axlert-o swing laterally, draftdevices, means operatively connected With said axle and actuated bylateral deflection ofthe line of draft' for 'turningsaid axle laterally,and mechanismY con-Y nected with said steering' Wheels and 0p' eratedautomatically by the turning ofsaid axle for swinging said Wheelslaterally With reference to the axle and in the opposite direction tothat in which the axle is turned.

JAY B. RHODES.

Certificate of Correction.

It is herebT certified thatthe naine of the assignee in Letters PatentNo. 1,601,510, granted September 2S, 1996, upon the application ofv JayB. Rhodes, of Kalamazoo, Michigan, for an improvement in Road-GradingMaohnesf, was erroneously Written and printed as TWestern WheelerScraper Company, Whereas said naine should have been Written andprintedas 'Western T/V/zeelecl Scraper Oompfmy, as shown by the records ofassignments in this ottce; and that the said Letters Patent should beread Wit-h this correction therein that the saine may conform to therecord of the oase in the Patent Office.

Signed and sealed this 19th day of October, A. D. 1926.

[SEAL] WM. A. KINNAN,

Act-ng 00m/misst@ne?o of Patents.

